WebGl interaction: additional testing

Change-Id: Id30a8d55f2aa63e118c5fb8bdd3cafe2ab7761e8
Merge pull request #14 from tribal-tec/master

Fix memleaks, minor cleanups
Merge pull request #13 from rdumusc/webglinteraction

WebGl interaction: additional testing
WIP

Change-Id: I856105b7bdf21091927ac5a82f1a52ef4ea4512c